Some points:
1) Rumor Bosses can spawn near the location of Town Hall Quests. Accidentally running into a random Lich when picking up grandma's dropped ring adds a level of difficulty. It will wake you up.
2) As stated above, yeah, you can't just reload to reroll loot. That's a design choice. Discussing ways to get around that function is considered a prohibited exploit. It's a no-no on the forum.
3) Generally speaking, for the purpose of this forum, the "cheats/exploits" standard is loosely defined as taking advantage of the game's code to do something you obvious weren't supposed to do. We can't provide a list of current exploits as that would count as discussing them. A great past example, was the ability to push your Companion into traps to disarm them. Just tell Adaon* to "stay put" than bulldoze away. The code was adjusted to prevent that game breaking tactic. For the re-roll issue, it's obvious Lich drops are supposed to be rare. Re-rolling until you get the rare item alters game play and is a bit of an entitlement mindset.
Given the grey-area of some exploits, we tend to lock threads, rather than issue bans.
4) The prohibition against discussing "cheats/tampering/modification/exploits" is to avoid complicated abuse issues. It's not a judgement on using exploits / cheats / tricks to play a game. There are a few nifty tricks that veteran players might stoop to using but it's one thing to take a short-cut, and another thing to post directions to the short-cut on the official forum for the game. The difference between "brilliant tactic" and "exploit" might be up to debate. Now, you hack your game, don't come here to complain because it's not working right.
*I really miss the ability to push Adaon into traps. Not to disarm them. Just to watch Adaon die repeatedly. It brought me great joy.